Stevenson.] Jt) [March 18, 



2. Gray sandy limestone 10' 



This appears to be barren. 



3. Ore 8' 



This consists of carbonate and silicate of zinc associated 

 with much galena. The calcareous matter has been leached 

 out and the ore is in irregular honeycomb masses. 



4. Limestone, evidently barren 9' 



• 5. Ore 8' 



The conditions are the same as those in No. 3. 



6. Limestone, gray 25' 



This contains a very large amount of blende and galena, but 

 the ore is not sufficiently concentrated to make working profit- 

 able. 



7. Ore 2 to 10' 



The conditions in this are the same as in Nos. 3 and 5. The 

 deposit shows more irregularity than was observed in the 

 others. 



8. Limestone, apparently barren 10' to 12' 



9. Ore 6' to 10' 



Here too the calcareous matter has been removed and the 

 ore, which consists of zinc silicate and carbonate, with only 

 a trace of galena, is cavernous. 



10. Limestone, barren, seen 5' 



No further exposures occur. The upper edges of the limestone in this 

 extensive stripping are rounded as though they had been exposed to long 

 erosion, and the whole was covered with a tough reddish clay, fifteen to 

 thirty feet thick, overlaid by slidden material, ten to twenty feet thick. 

 For the most part the clay is barren, but sometimes it yields fragments ot 

 galena and altered zinc ores ; and at a cutting just beyond No. 10 it has 

 yielded a very considerable quantity of earthy carbonate of lead. These 

 silico-carbonate ores are merely superficial, for at less than 100 feet from 

 the surface in No. 9 blende occurs to the almost complete exclusion of 

 calamine and smithsonite. 



Though commonly spoken of as "leads," these deposits have no fea- 

 tures entitling them to that name. The characteristics are well shown in 

 surface workings made on this property by J. S. Noble in 1866, when he 

 mined the zinc ore for shipment to New Jersey. These pits, at say half a 

 mile from the tipple of the present surface workings, are on Bald hill, 

 where erosion has removed the superficial material so as to expose the 

 limestone over many acres. As the lease under which the work was done 

 was short and as lump ore alone was to be removed, the deposit was worked 

 only where richest and most distinctly marked ; when it became indefi- 

 nite the pit was abandoned and a new opening was made elsewhere. The 

 whole area is pitted and the openings vary greatly in shape. Clearly no 



